 | | Re: Interesting BrickOS Timing Results
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(...) The delay was added a long time ago after a bit of discussion on this newsgroup/list. A search through old newsgroup posts will turn up a brief series of three posts with subject "Rom sensor read routine" from Apr/May 1999. The explanation (...) (22 years ago, 15-Jan-03, to lugnet.robotics.rcx.legos)
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| | Patches on SourceForge? A good/bad way to get changes into brickOS?
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I've just posted (URL) note that there are 4 other patches lingering from as far back as September. Will my patch be looked at because it has been posted there? For info, here is the patch description The last version of binutils that brickOS works (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Interesting BrickOS Timing Results
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This was a terrific analysis. It's not surprizing that current implementation hogs so much CPU time. If all four A/D channels are scanned every 150 us then the A/D interrupt is occuring every 37.5 us since each A/D channel generates its own (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Interesting BrickOS Timing Results
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(...) This would be my favourites. If one builds a fast moving robot, main concern will be how fast the robot reacts to light sensor changes or how small the structures could be that the light sensor will "see". If one builds a thinking robot, for (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Interesting BrickOS Timing Results
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Mark, ANOTHER great find! You are pushing BrickOS to new heights! Ok, so what can we do about this? 1) Provide a constant to set the update frequency at compile time. 2) Provide a variable to set the update frequency at run time. 3) Optimize the (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Interesting BrickOS Timing Results
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Oops, found a little bug. ;-) Forgot to turn off the rotation sensors. Caused a wrong reading if you let the program run through the readings more than once. The rotation sensor section should read like this: // with two rotation sensors enabled (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | Interesting BrickOS Timing Results
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Hi All, The recent posts about interfacing an i2c device to an RCX sensor port (in .robotics) got me interested in looking at the kernel code that handles the sensors. So, I did and found myself looking at the ds_handler function. This function is (...) (22 years ago, 14-Jan-03, to lugnet.robotics.rcx.legos)
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| | DJGPP Cross Compiler Progress
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I have successfully built an h8300 cross compiler for DJGPP using the newest version of gcc 3.2. I was not successful using gcc 2.95.2, the current used gcc compiler with brickOS, and at the advice of others tried gcc 3.2. Since it is the goal of (...) (22 years ago, 13-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: make seems not to work / djgpp
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(...) You should edit your Makefile. Regards, Michael (22 years ago, 12-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: make seems not to work / djgpp
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(...) I do not have a djgpp directory. Which legos version do you have? First time the make command works, only not, when want start a new project. Reinhard (22 years ago, 12-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: make seems not to work
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(...) Did you add the djgpp directory to your path? I don't remember everything I had to do, but here's a piece from MY autoexec.bat set path=c:\djgpp\bin;c:...til;%path% set djgpp=c:\djgpp\djgpp.env set shell=c:/djgpp/bin/sh.exe Steve (22 years ago, 12-Jan-03, to lugnet.robotics.rcx.legos)
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| | make seems not to work
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Hi! I try to compile a new programm (lightseeker.c) with make, but i only get this message (under WinLegos): make.exe: *** No rule to make target `lightseeker.lx', needed by `all'. Stop What is wrong? Reinhard (22 years ago, 12-Jan-03, to lugnet.robotics.rcx.legos)
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| | brickRC - A gnome based, LNP using remote control/monitor app for the RCX
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Hi, thanks to this group I got LNP working quite nicely. To get my fingers warm I wrote a little app to remote control the RCX with Linux. It also allows to monitor the input ports. It's quite usefull when you build a model and want to check the (...) (22 years ago, 12-Jan-03, to lugnet.robotics.rcx.legos)
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| | brickOS with BricxCC
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So far I have heard from two people who have successfully used brickOS with BricxCC. I'm interested in whether anyone else has tried using BricxCC to edit/compile/download programs to brickOS. Currently BricxCC requires that the cygwin bin directory (...) (22 years ago, 8-Jan-03, to lugnet.robotics.rcx.legos)
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| | dll questions
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I'm working on a new release of BricxCC at the moment and I want to better understand the dll utility - specifically the RCX host address and RCX source port options. I think I understand the RCX host address part. Correct me if I'm wrong. Supposing (...) (22 years ago, 8-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: makedepend variable in Makefiles
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Investigating into this further, apparently from the comments in CVS, a change was made to the makefile in legOS\boot (Rev 1.2) and legOS\demo (Rev 1.2) some three years ago. The comment stated "replaced makedepend by MAKEDEPEND". But no similar (...) (22 years ago, 6-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: workaround.patch for h8300-hms-ld crash
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(...) No problem. Stupid lugnet server stripped out the attachments. Here is the patch, both attached and inline. BrickOS maintainers: How about applying (some ideas from) this patch? Max Index: Makefile.user ===...=== RCS file: (...) (22 years ago, 6-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) This works in deed! Thank you so much Michael! No way I would have found this myself. BB (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) Ok. This is indeed the result if you run the original LNP package. There are several problems with your sources, too. So try the following to get things done: First, go to the lnpd subdir and edit rcxtty.c. In function tty_init you find a line (...) (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) Thanks. Too bad it doesn't work, but at least now I know it's not me :) Please let me know if I can be of any help. BB (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) I know that this won't help, but I tried your program (and the lnptest.c program from the lnp distribution) and got the same errors. No message came through, only frame errors. Will have a closer look at this. Regards, Michael (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) You are right, that would have probably given me a segfaut if the handler would have ever been called, but it isn't. Even a single, static printf in the handler doesn't work. What worries me are the error messages lnpd reports: (...) (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: LNP problem
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(...) What about ptr = (char *)&temp; Regards Michael (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | LNP problem
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Hi, I'm just getting started using LNP, read the howto and tried to play around with the examples therein. However, somthing goes wrong. I have a little programm on the RCX increasing a counter every second, displaying it's value on the lCD and (...) (22 years ago, 5-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: BrickOS & LinuxUSB & lnpd
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Hi, I would like to get your patches to make the tower and lnpd to w ork. I already have the tower working but I would like to see if did an ything different. So can you please send me your patches? (X) the patch to legotower.c to get the (...) (22 years ago, 4-Jan-03, to lugnet.robotics.rcx.legos)
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| | BrickOS & LinuxUSB & lnpd
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(i had a few problems to post, so this msg is a little too late...) Hi, i am new to brickOS, (since christmas) and i have one of those fancy RCX2.0 bricks with an USB IR-Tower. I am using debian and have little experiences with usb and (...) (22 years ago, 4-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: USB IR tower support in Lunix
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Hi, I got the USB IR-tower to work under linux using the same patch Florian used. I also sent an updated patch that applies to 0.2.6.09 to the original author of the patch. However I have to caution that the said patch only works with UHCI hubs that (...) (22 years ago, 4-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Communication between RCX's with BrickOS
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...Problem Solved #include <lnp/lnp-logical.h> lnp_logical_range(1); I set the IR transmission range to far and everything works fine. It seems the issue was that the RCX's are not facing eachother and depend on bouncing mesages off a wall. I'm (...) (22 years ago, 3-Jan-03, to lugnet.robotics.rcx.legos)
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| | makedepend variable in Makefiles
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While attempting to build brickOS under DJGPP I noticed a few discrepancies across the makefiles using the variable makedepend. Under the directories boot, demo, demo/c++ for the .depend rule it uses the variable $(MAKEDEPEND) while the makefiles in (...) (22 years ago, 2-Jan-03, to lugnet.robotics.rcx.legos)
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| | Communication between RCX's with BrickOS
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Hello Everyone, I have been working on a dual RCX robot for quite some time now, and have just recently upgraded to BrickOS. At first I attempted to used the LNP communication functions, such as lnp_adressing_write. I am not an expert, and I got (...) (22 years ago, 2-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: USB IR tower support in Lunix
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(...) Good! (...) I posted via the web-interface, I guess one needs a javascript browser for that. I like the navigation of the webinterface within threads. (...) Ah, very good! Does it also support the high-speed mode ? (...) Sounds like a good (...) (22 years ago, 2-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: USB IR tower support in Lunix
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(...) I just got the USB tower to work. At least, for downloading the BrickOS.srec kernel. I think I have to hack some more today to find a way to let 'dll' work with the /dev/tower0 device. I used the devicedriver at (URL) (22 years ago, 2-Jan-03, to lugnet.robotics.rcx.legos)
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| | Re: Float and int
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(...) For most brick projects I can think of, it is. If you want to travel your robot around, you will have to deal with sin, cos, tan and square root. First thing you can do is working with tables to avoid "on the fly" sin calculation. Second, you (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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| | RE: Float and int
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(...) I'm doing a seminar at BricksWest on fixed point notation and simple algorithms for square root, trig, etc for BrickOS and pbForth users. The focus will be on the mechanics of the algorithms, the actual code implementation will be a "exercise (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Float and int
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(...) Mabie Fixed Point is an answer. I dont know how it works but I have a book that suggests that a decent Fixed Point library can be faster than Floating Point if there isnt an FPU available. (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Float and int
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(...) You should look in the gnu gcc compiler documentation for this. Float support is not OS but compiler specific. As I recall, gcc uses IEEE float format, the specification should be found somewhere in the net. But doing float with the brick is (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: Float and int
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(...) int is 16 bits, big endian, signed. It goes from -32768 to 32767. unsigned int goes from 0 to 65535. char is 8, long is 32, long long is 64, with the standard limits. Floats and doubles are emulated in software, as the H8/300 processor has no (...) (22 years ago, 30-Dec-02, to lugnet.robotics.rcx.legos)
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| | Float and int
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Does anyone know what the maximum and minimum size of integer which can be stored is? Likewise, what is the floating point accuracy of BrickOS for variables of type "float" and "double" (is there such thing in BrickOS?) ? Both of these questions (...) (22 years ago, 29-Dec-02, to lugnet.robotics.rcx.legos)
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| | USB IR tower support in Lunix
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I have seen some past messages in this forum regarding the support for the USB IR tower in the Linux version of BrickOS. However, it seems that nothing have been added recently to the CVS tree at SourceForge. Is somebody working on this project (...) (22 years ago, 20-Dec-02, to lugnet.robotics.rcx.legos)
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| | Re: linker segmentation fault
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(...) Workaround attached. Brickos maintainers: Any comments? Maybe put something vaguely like it into CVS? Max. (22 years ago, 17-Dec-02, to lugnet.robotics.rcx.legos)
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